How i can call JavaScript function from asp.net server side if script in user control

Question

I have a ASP.NET page with 1 user controls registered.

i have one server control

<asp:LinkButton ID="vidoUpdatebtn" OnClick="vidoUpdatebtn_Click" runat="server">LinkButton</asp:LinkButton>

in .cs i handle

 protected void vidoUpdatebtn_Click(object sender, EventArgs e)
    {
        //do something
        ScriptManager.RegisterStartupScript(this, this.GetType(), "myscript", "doSomeThing()", true);

    }

in user control i have function doSomeThing()

 function doSomeThing() {
         alert("TestReady");
     }

when i click on LinckButon registred function dosen't work

1st thing's 1st: RegisterStartupScript is a means of making javascript code appear in your page without actually writing it yourself everytime. You should write whatever javascript function you have instead of the "doSomeThing" identifier you wrote (that is the actual javascript code). Secondly: you shouldn't register the startup script when the user clicks the button (that is way to late). And last: registering the script is not enough. You must bind the OnClientClick attribute of the <asp:LinkButton> tag to the javascript function's name like so: "FunctionName()". Look at my answer... — Eduard Dumitru
– Eduard Dumitru, Commented Feb 23, 2013 at 17:26

Eduard Dumitru · Accepted Answer · 2013-02-23 17:16:48Z

3

Write this in PageLoad (the only modifications from what you were writing are the moment in time of the registration -- PageLoad not Click, Click is too late and the face that you must write the actual implementation of the javascript function here):

    protected void Page_Load(object sender, EventArgs e) {
        ScriptManager.RegisterStartupScript(this, this.GetType(), "myscript", 
@"function doSomeThing() {
    alert(""TestReady"");
}"
        , true);
    }

and this in the asp:LinkButton tag (you must specify the OnClientClick attribute):

<asp:LinkButton ID="vidoUpdatebtn" runat="server" OnClick="vidoUpdatebtn_Click" OnClientClick="doSomeThing()" >LinkButton</asp:LinkButton>

And it should work.

edited Feb 23, 2013 at 17:16

answered Feb 23, 2013 at 17:14

Eduard Dumitru

3,25019 silver badges32 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

HaikMnatsakanyan Over a year ago

thanks man this method helped me but I changed it a little its work even if i write ScriptManager.RegisterStartupScript(this, this.GetType(), "myscript", "fileUploadClick()" , true); because function doSomeThing() already exist in my user control

Eduard Dumitru Over a year ago

might I add that you can completely forget about the ScriptManager.RegisterStartupScript in that case. Try it and you'll see what I mean : if you already have the fileUploadClick function in your javascript, in your page, all you need to do is assign it's OnClientClick attribute accordingly. One way to try and discover if I'm right or wrong is modifying the RegisterStartupScript to: ScriptManager.RegisterStartupScript(this, this.GetType(), "blahblahblah", "andsomemoreblah" , true); (literally) or even by commenting it entirely

coder · Accepted Answer · 2013-02-23 17:05:26Z

0

Have you tried this way:

Add Script manager on your aspx page

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true" />

Codebehind:

Page.ClientScript.RegisterStartupScript(this.GetType(),"myscript", "doSomeThing()",true);

answered Feb 23, 2013 at 17:05

coder

13.2k32 gold badges116 silver badges221 bronze badges

1 Comment

coder Over a year ago

What do you mean by it didn't help what is the error are you getting?

Grant Clements · Accepted Answer · 2013-02-23 17:15:12Z

0

If you want client side code to run on the button click, you could use the OnClickClick property instead of the OnClick event. That'll also avoid the need for a postback and will give immediate feedback to the user.

e.g.

<asp:LinkButton ID="vidoUpdatebtn" OnClientClick="alert('TestReady'); return false;" runat="server">LinkButton</asp:LinkButton>

edited Feb 23, 2013 at 17:15

answered Feb 23, 2013 at 17:05

Grant Clements

9846 silver badges14 bronze badges

Collectives™ on Stack Overflow

How i can call JavaScript function from asp.net server side if script in user control

3 Answers 3

2 Comments

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related